KR20060028200A - Service Differentiation Method According to Access Network Type in Broadband Integrated Network - Google Patents

Abstract

The present invention relates to a method of differentiating network services for each access infrastructure to which a user is connected in a broadband integrated network (BcN).

The present invention establishes a classification standard for each type of access infrastructure in a broadband integrated network (BcN) environment in which various networks are integrated, and provides a service type at a first integrated aggregation point, which is a point where traffic sent from each access infrastructure is primarily concentrated. Therefore, service priority is assigned according to the classification criteria by traffic classification and access infrastructure type. To this end, in the policy processing portion of the primary aggregation point, the priority of traffics from various access networks is reassigned by access network type and required service, thereby achieving differentiation of service order according to priority. Therefore, it can be further developed from the existing QoS policy granting scheme based only on the type of service, and can provide differentiated BcN service differentiation that can meet the user's access network environment conditions and service-specific requirements.

Broadband Integrated Network, BcN, Network Services, Access Network, QoS, Traffic, Differentiation, Class

Description

Service differentiation method depending on the type of access network in a broadband integrated network {BcN service differentiation method depending on the type of access network}             

1 is a block diagram illustrating a broadband integrated network to which the present invention is applied;

2 is an internal configuration diagram of a primary integrated concentrator according to the present invention;

3 is a view showing a processing procedure in a packet filter unit of a primary integrated concentrator according to the present invention;

4 is a diagram illustrating a processing process in a priority reassignment unit of a primary integrated concentrator according to the present invention;

5 is a diagram illustrating a processing procedure in the policy execution unit of the primary integrated aggregation apparatus according to the present invention.

     <Brief description of symbols for the main parts of the drawings>

11; Access network equipments 12; Primary integrated concentrator

13; Broadband converged network backbone 14; Broadband Integrated Network Backbone

21; A packet filter unit 22; Policy Enforcement Department

23; Bandwidth limiter 24; Priority Reassignment

25; Priority queue

The present invention relates to a service differentiation scheme according to an access network type in a BcN network in which various access networks are integrated. More specifically, a method of differentiating network services for each access infrastructure accessed by a user in a broadband integrated network (BcN) It is about.

The access network in the Broadband convergence network (BcN) is a wireless network including WiBro (Wireless Broadband Internet), 3G / 4G (3 Generation / 4 Generation) mobile and Wi-Fi (Wireless Fidelity). Fiber To The Curb (FTTC) / Hybrid Fiber Coax (HFC), which includes x Digital Subscriber Line (xDSL) and cable subscriber, and Fiber To The Home (FTTH) / Fiber To The Office).

In the BcN network, the same service is developed to provide the same quality assurance service regardless of the type of access infrastructure. However, due to the characteristics of each access network, the transmittable bandwidth and the providing speed are different, and there are limitations in providing the same quality guaranteed service. In particular, when the Internet service is provided in the 3G mobile network and the Internet service is provided in the fixed access network, it is unreasonable to apply the same quality of service and the same billing system. Therefore, it is necessary to classify according to the type of access network of the BcN network and to apply a quality of service (QoS) policy according to the type of network.

An object of the present invention devised to meet the above needs is to provide a network service suitable for a user's environment and requirements by applying a quality of service (QoS) application policy for each service type and a differentiation policy for each type of access network to which the customer belongs. It is to provide a method.

Service differentiation method according to the type of access network in a broadband integrated network according to the present invention for achieving the above object, the first integrated aggregation to aggregate the various types of access network equipment, and packets from the access network equipment Claims [1] A method for differentiating a service according to an access network type in a broadband integrated network having a device and a secondary integrated concentrator for collecting packets from a plurality of primary integrated concentrators and sending the packets to a broadband integrated network (BcN),

A first step of the access network equipment adding the access network information to the packet input from the subscriber station and delivering the access network information to the primary integrated concentrator;

A second step of the primary integrated aggregation apparatus classifying a packet received from the access network equipment into a service class of n level (n is a natural number);                     

The primary aggregation concentrator reclassifies m (m is a natural number) access network type for each service class of the n stage and classifies all of them into n * m classes, based on the n * m classes in the packet. The third step of reassigning priorities,

And a fourth step of delivering the reassigned packet to the secondary integrated concentrator according to service priority.

Hereinafter, a service differentiation method according to an access network type in a broadband integrated network according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In general, there are 4 to 8 service classes used for quality assurance in a BcN network. When defining a service class based on IEEE 802.1p, a total of eight service classes are defined, and four service classes may be defined in consideration of the type of the queue of the BcN access network device. Based on this, a total of 64 service classes can be used when classifying the service class into more detailed service classes using DiffServ. However, 16 service classes are actually used. In addition, 8 to 12 queues are used in consideration of the type of queues of the access network equipment. Therefore, in the present invention, three types of access network infrastructure are classified according to the type of access network. These three types of access network infrastructures include 3G / 4G mobile, connectionless-oriented access infrastructure (COA) with WiBro and Wi-Fi, and COCA (FCA) with FTTC (represented by xDSL) and FHC (cable). This includes the Connection-Oriented Current Access infrastructure and the Connection-Oriented New Access infrastructure (CONA) with FTTH / FTTO.

In addition, according to the access network service, it is classified into Best Effort, Excellent Effort, Interactive Service, and Network Control / Guaranteed Service.

Based on these two classification criteria, the policy is granted and applied to the queue in the process of remarking the packet at the primary aggregation point, thereby achieving service differentiation according to the required service and access network type.

1 is a block diagram illustrating a broadband integrated network to which the present invention is applied.

The broadband convergence network is a primary aggregation aggregation system that aggregates packets generated by access network devices 11 of each type connected to three types of subscriber stations (COA, CONA, COCA) and access network devices 11. Device 12, a secondary integrated concentrator 13 for condensing packets collected by a plurality of primary integrated concentrators 12 and delivering them to the broadband integrated network backbone 14, and a broadband integrated network backbone 14 )

In the present invention, the interval between the subscriber terminal of each type and the primary integrated concentrator 12 is an 802.1p application interval, and the access network equipment divides the packet into four classes according to the service class and transmits the packet to the primary integrated concentrator 12. do. The primary integrated concentrator 12 and the secondary integrated concentrator 13 are DiffServ application sections. The primary integrated concentrator 12 is divided into 12 classes according to the type of access network and service class. It transmits to the vehicle aggregation concentrator 13. The section between the secondary integrated concentrator 13 and the broadband integrated network backbone 14 is a multiple label switching (MPLS) application section.                     

That is, the primary integrated concentrator 12 is a point at which all kinds of wired and wireless access networks are integrated and plays an important role in providing differentiated services for each type of access network and service type. The primary integrated concentrator 12 includes a packet filter unit 21, a policy execution unit 22, a bandwidth limiting unit 23, a priority reassignment unit 24, and a priority queue 25. It includes.

The packet filter 21 receives a packet including access network information. In order to apply the present invention, when a service is required from a subscriber station, the primary aggregation concentrator should be able to distinguish the type of access network to which the subscriber station belongs. To this end, the access network equipment transmits the packet of the subscriber station by including priority information according to IEEE 802.1p and an identifier (ID) for each type of access network.

The packet filter 21 classifies each service class by access network infrastructure. As shown in FIG. 3, the packet filter 21 includes eight service classes (best effort, back ground / best effort, spare / reserved, excellent effort / reserved, controlled load / applications, and interactive multimedia) according to IEEE 802.1p. In this case, the received packets classified into interactive voice / guaranteed service and network control are newly classified into four levels of service class (best effort, excellent effort, interactive service, and network control / guaranteed service).

The policy execution unit 22 performs two functions. The first function is to limit bandwidth by four service classes classified by the packet filter unit 21, and the second function is to reassign priority.                     

The first function sets the bandwidth limit at a reasonable rate according to each service classification scheme in order to prevent one service from occupying the entire bandwidth. The limit bandwidth for each service class is stored in the bandwidth limiter 23. do.

As shown in FIG. 4, the service classes classified in the four stages in the packet filter unit 21 are reclassified according to the access network type to redefine the classes for each service and each access network. That is, 12 classes are generated as shown in FIG. 5 by combining four types of service classes and three types of access networks. Although DiffServ is the most appropriate way to guarantee the quality that a primary integrated concentrator can provide, not all 64 classes used for deep sub are used, but in the present invention, EF and BF parts are reserved. Leave it as it is and use the rest of the AF to identify the class. The class information newly divided by the service type and the access network type is stored in the priority reassigning unit 24.

The priority queue 24 is applied to the actual queue according to the priority of the class newly given by the policy execution unit 22. Integrated concentrators used in broadband integrated networks (BcN) are indispensable for the ability to perform integrated acceptance and quality assurance services. Therefore, the larger the capacity or number of queues, the more preferable. However, it is preferable to have 12 queues in consideration of the development status, development direction, and operational management aspects of the integrated concentrator. Accordingly, the packets allocated in the priority queue 25 according to the service priority are applied by applying the reallocated packets to the actual queues and operating these queues by various queue management algorithms. Is passed to.                     

In the secondary integrated concentrator 13, traffic is collected from a plurality of primary integrated concentrators. The secondary integrated concentrator must process the aggregated traffic based on their respective priorities, and the broadband integrated network 14 MPLS-based switching is performed by transmitting to the edge router (ER). In the secondary integrated concentrator 13, the traffic allocated by the primary integrated concentrator 12 in the form of deep sub-convergence can be converged to cause congestion between the priorities, thereby providing a wider bandwidth, processing speed, The collection rate should be applied.

The edge router ER of the broadband integrated network 14 remaps the traffic flowing from the secondary integrated concentrator so that the switching can be performed based on MPLS. Ultimately, the traffic passing through the broadband integrated network is sent to the server providing the service, performs the service, and returns the service result to the subscriber in reverse order.

Although the technical idea of the present invention has been described with reference to the accompanying drawings, this is intended to be illustrative of the best embodiments of the present invention by way of example and not for purposes of limitation. In addition, it is obvious that any person skilled in the art may make various modifications and imitations without departing from the scope of the technical idea of the present invention.

As described above, according to the present invention, detailed classification criteria are established according to the type of service requested by the subscriber and the type of access network to which the subscriber belongs, thereby providing the subscriber with optimal services for each type of access network, and the service provider provides a flexible access network. There is an advantage to achieving evolution.

Claims (4)

Various types of access network equipment, a primary integrated concentrator for condensing packets introduced from the access network equipments, and packets received from a plurality of primary integrated concentrators are aggregated and transmitted to a broadband integrated network (BcN). In the broadband differentiation network having a secondary integrated aggregation device in the service differentiation method according to the access network type, A first step of the access network equipment adding the access network information to the packet input from the subscriber station and delivering the access network information to the primary integrated concentrator; A second step of the primary integrated aggregation apparatus classifying a packet received from the access network equipment into a service class of n level (n is a natural number); The primary aggregation concentrator reclassifies m (m is a natural number) access network type for each service class of the n stage and classifies all of them into n * m classes, based on the n * m classes in the packet. The third step of reassigning priorities, And a fourth step of delivering the reassigned packets to the secondary aggregation concentrator according to service priority. The method of claim 1, wherein the service class comprises four levels of Best Effort, Excellent Effort, Interactive Service, and Network Control / Guaranteed Service. Service differentiation method according to access network type in broadband integrated network, characterized in that divided into. The access network of claim 1, wherein the access network includes a 3G / 4G mobile, a connectionless-oriented access infrastructure (COA) including WiBro and Wi-Fi, a FTTC represented by xDSL, and a COCA including FHC represented by a cable. A service differentiation method according to an access network type in a broadband integrated network, characterized by categorizing into three types of connection-oriented current access infrastructure (CON-) and connection-oriented new access infrastructure (CONA) including FTTH / FTTO. The method of claim 1, wherein the fourth step maps the reassigned packets to the n * m priority queues for each class and delivers the packets to the secondary integrated concentrator according to the priorities. Service Differentiation Method According to Access Network Type in Broadband Integrated Network.

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